Centrifugal pump.



P. OSTENBERG.

CENTRIFUGAL PUMP. APPLICATION FILED JAN- 23. I918.

Patented Nov. 5, 1918'.

2 bHEETS-SHEET 2 .ttmwtttmttet. ttte" To all whom it may cmwem Be 1tKne'wn that Lterwee tltemmmem 2t A CItiZGH ot the United Stetee, and.residing};

near San Jose, in the county et Saute Ute e and State 015 tl'eti't "mm,have itwetlteet CB1?" tztin nev and ueetut Improvements m Celt tlifugaiPumps, 0t which the 1501,10 Wiitl specification Ly invention rete'tes teimpmweetents in centrifugal pumps, :tt'td.IHtI'ttCHttLMy t e int---prevel'nente 111 that type of pump elmwe ltl'lilt described in my eepemttng ZHPPttCittttttl titled "Centrit'u et. pttmp, Serial Ne. let-weefiled March he, 191W, allowed Jenumy 1918.

It is the Object Of my inventiet: te pteviate bowls for pumps et theabove indieztteet ehzuracter that will be mt such it town amt. beprovided with vanes at such a etmreetet ate 2e to prevent reducedettteieney tln'eugtl tf'l-te tionel lessee. v

With these and other ebjeets in View the invention consists in the noveland useful provision, eonetmetien, fimmetieu, eenzbitm 2% time and reati've emz'mgement et pr, members amt features hereimjttet described,shown in the tlnwvtege :mt t thm tty pointed out in the claims" In thedmWi lt igm'e it e vertical nevetee eeetiee. thmugh my impte'vedt A ump,pm tty eteveJ- tiem Fig, e eectiettet View en time it A et Fig,

3 It: 1 1th utien etmw- 11mg .etm e't ctittusien value,

ttigj t 4; it slide etevetien e'tl twsfli" pump embettyie my have? em.

t} e see met View 1m tent Fig, at

Fig. 6 is 6 nit. eeetitme showing it prevmien tram being :tereect tmettum:

vanes fitimitm. etmmetere wt? ttititi re t'eit eimitar perrte thtewg'heut the titstfibl'ttt. wieweu Jtt It it tmve etmwm e tttbttt w 1it"; it

section being ette'vm at, 6 amt the upper: or diectmt; e egemne beingetwml at "t t tet- LD is t tt tet' being .et teee etmmeter than tetmer,.tttedl etet eueeeethttg" eectmze ttt mte eitemm tee" it the next tee ereeeti' tenet edge ejnt, the ehem leer 5 are indict and Y theweetiwety.with it number e't teem edge tt meat L'lftl'ttt the 5mm 0t Ei'etttt aetezi jttt it ettevmri u etr nwimgg tett thetetm by It witheut i1 en ctw ,m' enwyfni titty LL term ttS edge: mitt btettee MENU. e t t. I thetewet' edge et subetzmtially flush w water trim 't'llttltt J t emnber 5th 1' '"h the upper e meet perimeter 0t tlj ttueh with. the t f chamber5. tn the etntl F It and the meet e vanes t) we Mined with the bet." 5untit they r'iee te the limpet mm; me e.

ireter 11 Where the Sititt. tenet e tii'eeteet iI'LWMW tt 1' and uguw'mfttty t said upper surtaee to the diewtmvgge eye. 1* as: ShUWH.

t /tlttn termed and ttt the water is detivered te eztetl item the next:tU'fFVBIL mt m 1th a, vertical movement t et. the :te in t'etet 155 et.t'tt k e mat/er by gt, metlem metete t eheerett e at the te'tet. by t tpettmete; ett' eem ptetet eeieeeq mentt; mg meme em the tit.

my we 1e mew-n. etttttm with the entet ln UTAH e tmte neeeese y, te it:eatety e It in tmettton but tt: 1 lteetgthwiee it and 5, in which casethe rotors may be assembled on the shaft and then positioned in one halfof the casing, the other half of the casing subsequently being bolted inposi tion. In these figures a horizontal pump is shown with the shaftreversed, the inlet be-- ing shown at 15 and the discharge at 16.

In Fig. 6 it is shown that ring 14 may have a rib 17 formed on its undersurface to engage groove 18' formed as shown, this constructionpreventing water from being forced backwardly past the under side ofring 14 and thus lessen the eflieiency of the pump. I

Having thus described my invention, What- I claim is i 1. A centrifugalpump including a shaft, a plurality of rotors mountedthereon withoutintervening bearings, and a casing provided with a plurality of chambersopera tively mounted with relation to said rotors, each chamber havingaxially alined inlet and discharge openings, the discharge opening beingof less diameter than the inlet opening.

2, A centrifugal pump including a shaft, a plurality of rotors mountedthereon without intervening bearings, and a casing provided with aplurality of chambers operatively mounted with relation to said rotors,each chamber having axially alined inlet and discharge openings, thedischarge opening being of less diameter than the inlet opening, anddiffusion vanes positioned therein and terminating at said dischargeopening.

8. A centrifugal pump including a shaft.

a plurality of rotors mounted thereon without intervening bearings, anda casing provided With a plurality of chambers operatively mounted withrelation to said rotors, each chamber having axially alined inlet anddischarge openings, the discharge opening being of less diameter thanthe inlet opening, and diffusion vanes positioned therein and extendingfrom said inlet opening to said discharge opening.

,4. A centrifugal pump including a shaft,

a plurality of rotors mounted thereon Without intervening bearings, anda casing provided with a plurality of chambers operatively mounted withrelation to said rotors, each chamber having axially alined inlet anddischarge openings, the discharge opening being of less diameter thanthe inlet opening, and diffusion vanes positioned therein andterminating at said discharge-opening, the free edges of said'diffusionvanes being formed to follow the contour of the contiguous surface ofthe adjacent rotor.

5. A centrifugal pump including a shaft, a compound rotor mountedthereon, and a casing provided with a plurality of chambers operativclymounted with relation to said compound rotor, each chamber havingaxially alined inlet and discharge openings, the discharge opening beingof less diameter. than the inlet opening.

6. A centrifugal pump including a shaft, a compound rotor mountedthereon, and a casing provided with a plurality of chambers operativelymounted with relation to said compound rotor, each chamber havingaxially alined inlet and discharge openings, the discharge opening beingof less diameter than the inlet opening, and ditl'usion vanes positionedtherein terminating at said discharge opening. I

7. In a pump of the character described the combination of acentrifugally acting rotor operatively mounted on a pump shat t and aplurality of diffusion vanesoperatively mounted with relation to saidrotor, the inner edges of said vanes being disengaged and formed tofollow the contour of the contiguous surface of said rotor.

8. A centrifugal pump including a shaft, a compound rotor mountedthereon, and a casing provided with a plurality of chambers operativelymounted with relation to said compound rotor, each chamber having inletand discharge openings, the discharge opening being of less diameterthan the inlet opening, and diffusion vanes positioned between saidinlet and discharge openings.

Signed at San Jose in the county of Santa Clara and State of California,this 14th day of January, 1918.

PONTUS OSTENBERG.

